<!doctype html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <title>My Music Play</title>
    <link rel="stylesheet" href="css/mdbtn.css">
    <script src="js/mdbtn.js"></script>
</head>
<body>
<div class="button">按 钮<div class="animation"><div class="rev"></div></div></div>
</body>
</html>